• Title/Summary/Keyword: beneficial use

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칼슘 및 칼슘대사 관련 생리활성물질의 첨가가 산란종계의 후기 난각질 및 종란 생산성에 미치는 영향

  • 김은집;안병기;강창원
    • Proceedings of the Korea Society of Poultry Science Conference
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    • 2004.11a
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    • pp.53-68
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    • 2004
  • Eggshell quality is one of the most important factors that influence hatchability. The porosity and overall quality of eggshell have a very significant effect on exchange of vital gas (carbon dioxide and oxygen) between the developing embryo and the air during incubation. Thin-shelled eggs showed the greater weight loss than do thick-shelled eggs. causing the chick to have difficulty in hatching. Thin-shelled eggs also have a much greater chance of being cracked during handling. On the other hand. thick-shelled eggs showed the higher hatchability as a result of greater fertility and lower intermediate and late embryonic mortalities. Even a small percentage improvement in the eggshell quality could result in significant saving to the breeder industry in an increasingly competitive environment. Many factors including nutrition. management practices, environmental conditions and breeding are known to be related to eggshell quality. In this review brief accounts of each factor associated with eggshell quality and hatchability were provided. We conducted three experiments to investigate the effects of dietary Ca. vitamin D3 metabolite and some bioactive materials on eggshell quality and hatching egg production. The results of our studies showed that relatively high levels of dietary Ca in combination with 25-hydroxycholecalciferol had beneficial effects on improving eggshell quality and reproductive performances in aged egg-type breeder hens. It was also suggested that the proper use of some feed additives such as isoflavon and chitosan might provide means of improving eggshell quality and reproductive performances in aged egg-type breeder hens.

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Developing genetic resources for pre-breeding in Brassica oleracea L.: an overview of the UK perspective

  • Walley, Peter G.;Teakle, Graham R.;Moore, Jonathan D.;Allender, Charlotte J.;Pink, David A.C.;Buchanan-Wollaston, Vicky;Barker, Guy C.
    • Journal of Plant Biotechnology
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    • v.39 no.1
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    • pp.62-68
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    • 2012
  • The vegetable brassicas are an important crop worldwide and are of significant commercial value. In order to ensure our targets for food security are met it is important that these crops are continually improved to increase sustainability of production, increase nutritional quality and reduce waste. Development of resistances against both biotic and abiotic stress are recognised as being key. Plant breeding plays a vital role in addressing these issues through the development of new and improved varieties. This continued improvement is becoming evermore dependent on our ability to identify and introgress beneficial alleles from 'exotic' germplasm into elite breeding material. Increasingly, more diverse germplasm such as those found in genebanks is being screened for benificial allelic variation, however, plant breeders often find it difficult to make use of such material due to the time required to remove undesirable characteristics from progeny due to linkage drag. This article describes how we have attempted to overcome this and develop resources that make the diversity available within the $Brassica$ $oleracea$ genepool more accessible.

A Study on the Advanced Foreign′s Third Parth Logistics Trend & View at Global Logistics Times (글러벌 물류시대 선진외국의 제3자 물류동향과 전망)

  • 박영태
    • Proceedings of the Korean DIstribution Association Conference
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    • 2001.11b
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    • pp.91-122
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    • 2001
  • This paper's object is to study the Advanced Foreign's Third Party Logistics Trend & View at Global Logistics Times. So, I analysed the Advanced Foreign U.S. & EU and the results are as follows: First, a growth in the number of outsourcing relationships has contributed to the development of more flexible organizations, based on core competencies and mutually beneficial longer-term relationships. So, the development of logistics relationships has brought mixed results. Across many industries, logistics outsourcing is a rapidly expanding source of cost savings, competitive advantage, and customer service improvements. Thus, it appears that Third Party Logistics(TPL) concepts could be useful in meeting the goals of the 1ogistics function. Second, the field of logistics and supply chain management is becoming strategically important. At the same time, it is becoming increasingly complex because of the rapid advances in management methods, e-commerce, technology, and enabling information systems. However, Third Party Logistics provider, many a times, lack broad set of skills, integrating technologies, strategies and global reach. So, Fourth Party Logistics(4PL) is the next significant evolution in supply chain outsourcing. 4PL delivers a comprehensive supply chain solution, and delivers value through the ability to impact the entire supply chain. The 4PL industry is likely to grow as more companies use e-commerce at Global Logistics Times.

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Use of plant growth-promoting rhizobacteria to control stress responses of plant roots

  • Kang, Bin-Goo;Kim, Woo-Taek;Yun, Hye-Sup;Chang, Soo-Chul
    • Plant Biotechnology Reports
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    • v.4 no.3
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    • pp.179-183
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    • 2010
  • Ethylene is a key gaseous hormone that controls various physiological processes in plants including growth, senescence, fruit ripening, and responses to abiotic and biotic stresses. In spite of some of these positive effects, the gas usually inhibits plant growth. While chemical fertilizers help plants grow better by providing soil-limited nutrients such as nitrogen and phosphate, overusage often results in growth inhibition by soil contamination and subsequent stress responses in plants. Therefore, controlling ethylene production in plants becomes one of the attractive challenges to increase crop yields. Some soil bacteria among plant growth-promoting rhizobacteria (PGPRs) can stimulate plant growth even under stressful conditions by reducing ethylene levels in plants, hence the term "stress controllers" for these bacteria. Thus, manipulation of relevant genes or gene products might not only help clear polluted soil of contaminants but contribute to elevating the crop productivity. In this article, the beneficial soil bacteria and the mechanisms of reduced ethylene production in plants by stress controllers are discussed.

Prevention of Obesity and Type 2 Diabetes by Using Probiotics (프로바이오틱스 섭취를 통한 비만 및 제2형 당뇨의 완화)

  • Eor, Ju Young;Park, Mi Hyun;Kim, Sae Hun
    • Journal of Dairy Science and Biotechnology
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    • v.33 no.4
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    • pp.231-235
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    • 2015
  • The beneficial effects of probiotics on human health have been extensively studied. Strains of Lactobacillus and Bifidobacterium have gained considerable attention, as they are major groups of probiotic bacteria that improve gastrointestinal health. Recently, probiotics have been found to have positive effects on obesity and type 2 diabetes mellitus (T2D) that go beyond the improvement of gut health. Probiotics can alter the secretion of substances such as leptin and adiponectin from white adipose tissue via certain mechanisms. Additionally, probiotics can modulate the adaptive immune system against low-grade inflammation caused by obesity. The potential role of probiotics in the treatment of T2D has garnered interest because of increasing evidence of the anti-diabetic effect of probiotics. In this review, we discuss the results of in vivo studies that have examined the use of probiotics to prevent obesity and T2D, while primarily focusing on the studies that explore the cellular and molecular mechanisms underlying the activity of promising probiotic strains. The conclusions of this review could be of help to researchers who are investigating the effects of probiotics on obesity or T2D, and to patients with these diseases.

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Prevention of Alcoholic Liver Disease by Using Probiotics (프로바이오틱스 섭취를 통한 알코올성 간 질환의 완화)

  • Lee, In Ok;Kim, Sae Hun
    • Journal of Dairy Science and Biotechnology
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    • v.32 no.1
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    • pp.1-6
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    • 2014
  • Probiotics have been extensively studied for their beneficial effects on human health. In particular, Lactobacillus and Bifidobacterium strains have gained considerable attention as major groups of probiotic bacteria that improve gastrointestinal health. However, emerging evidence suggests that probiotics offer benefits beyond those observed in the gut recent studies suggest that probiotics and/or their components exert favorable effects on alcoholic liver disease (ALD) pathogenesis such as decreasing intestinal permeability, inhibiting pathogenic bacteria growth, increasing the activity of alcohol metabolism enzymes, modulating the adaptive immune system, and suppressing fatty acid synthesis genes. In this review, we discuss the results of in vivo and in vitro studies that have examined the use of probiotics to prevent ALD, primarily focusing on those that explore the cellular and molecular mechanisms underlying the activities of promising probiotic strains. The evidence presented in this review could help in screening for probiotic strains that have protective effects in ALD patients and in further elucidating the mechanisms of their actions.

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An Evolutionary Optimized Algorithm Approach to Compensate the Non-linearity in Linear Variable Displacement Transducer Characteristics

  • Murugan, S.;Umayal, S.P.
    • Journal of Electrical Engineering and Technology
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    • v.9 no.6
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    • pp.2142-2153
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    • 2014
  • Linearization of transducer characteristic plays a vital role in electronic instrumentation because all transducers have outputs nonlinearly related to the physical variables they sense. If the transducer output is nonlinear, it will produce a whole assortment of problems. Transducers rarely possess a perfectly linear transfer characteristic, but always have some degree of non-linearity over their range of operation. Attempts have been made by many researchers to increase the range of linearity of transducers. This paper presents a method to compensate nonlinearity of Linear Variable Displacement Transducer (LVDT) based on Extreme Learning Machine (ELM) method, Differential Evolution (DE) algorithm and Artificial Neural Network (ANN) trained by Genetic Algorithm (GA). Because of the mechanism structure, LVDT often exhibit inherent nonlinear input-output characteristics. The best approximation capability of optimized ANN technique is beneficial to this. The use of this proposed method is demonstrated through computer simulation with the experimental data of two different LVDTs. The results reveal that the proposed method compensated the presence of nonlinearity in the displacement transducer with very low training time, lowest Mean Square Error (MSE) value and better linearity. This research work involves less computational complexity and it behaves a good performance for nonlinearity compensation for LVDT and has good application prospect.

Adhesion Properties of Indigenous Dadih Lactic Acid Bacteria on Human Intestinal Mucosal Surface

  • Dharmawan, Jorry;Surono, Ingrid S.;Kun, Lee Yuan
    • Asian-Australasian Journal of Animal Sciences
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    • v.19 no.5
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    • pp.751-755
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    • 2006
  • Dadih is Indonesian traditional fermented buffalo milk believed by the natives to have beneficial effects on human health. This may be due to the probiotic properties possessed by the lactic acid bacteria (LAB) involved in its fermentation process. It was discovered that ten strains of dadih lactic isolates possessed some probiotic properties in vitro. In this study, the adhesion properties of dadih LAB, in comparison with documented probiotic strains, were investigated in vitro by using mucin extracted from human faeces and Caco-2 cells as the models for human intestinal mucosal surface and intestinal cells respectively. The adhesion results showed the distinction of Lactobacillus reuteri IS-27560 in adhering to both mucus layer and Caco-2 cells. The competition assay for adhesion to the mucus layer between dadih LAB and selected pathogens indicated the competence of Lactococcus lactis IS-16183 and Lactobacillus rhamnosus IS-7257 in significantly inhibiting the adhesion of Escherichia coli O157:H7. Accordingly, these two strains may be potential candidates for use as probiotic strains. Overall, the adhesion properties of all dadih LAB strains were relatively comparable to that of Lactobacillus casei Shirota and Lactobacillus rhamnosus GG, the documented probiotic strains.

Accurate Representation of Light-intensity Information by the Neural Activities of Independently Firing Retinal Ganglion Cells

  • Ryu, Sang-Baek;Ye, Jang-Hee;Kim, Chi-Hyun;Goo, Yong-Sook;Kim, Kyung-Hwan
    • The Korean Journal of Physiology and Pharmacology
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    • v.13 no.3
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    • pp.221-227
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    • 2009
  • For successful restoration of visual function by a visual neural prosthesis such as retinal implant, electrical stimulation should evoke neural responses so that the informat.ion on visual input is properly represented. A stimulation strategy, which means a method for generating stimulation waveforms based on visual input, should be developed for this purpose. We proposed to use the decoding of visual input from retinal ganglion cell (RGC) responses for the evaluation of stimulus encoding strategy. This is based on the assumption that reliable encoding of visual information in RGC responses is required to enable successful visual perception. The main purpose of this study was to determine the influence of inter-dependence among stimulated RGCs activities on decoding accuracy. Light intensity variations were decoded from multiunit RGC spike trains using an optimal linear filter. More accurate decoding was possible when different types of RGCs were used together as input. Decoding accuracy was enhanced with independently firing RGCs compared to synchronously firing RGCs. This implies that stimulation of independently-firing RGCs and RGCs of different types may be beneficial for visual function restoration by retinal prosthesis.

Effect of Co culture System with Autologous Cumulus Cells on Embryo Quality and Pregnancy Rates (체외수정시술주기에서 배아와 난구세포의 공배양 효과에 관한 연구)

  • Hur, Eui-Jong;Lee, Won-Ki
    • Clinical and Experimental Reproductive Medicine
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    • v.25 no.3
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    • pp.299-304
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    • 1998
  • Despite the rapid development of assisted reproductive technologies (ART) in recent years, implantation rates after replacement of embryos into the uterine cavity remains low. Several techniques such as culture conditions based on formulations of human tubal fluid and various ART techniques as GIFT, ZIFT, TET have been adopted in recent years to improve embryo viability in vitro and implantation rates. Also, coculture of human IVF-derived embryos have been used in an effort to increase the number of viable embryos following IVF and to improve synchrony between the developing embryo and the uterine environment. The aim of this study was to evaluate whether the use of co culture with autologous cumulus cells has a significant beneficial effect on the development of embryos in vitro and its relation to the pregnancy rates in 120 patients with previous failed IVF-ET from September, 1995 to January 1998. We obtained the results from which significant improvement in the quality of viable embryos were observed using a coculture system with autologous cumulus cells, but pregnancy rates in this group of patients did not differ from the rate in the standard IVF group during the same period. Our study shows that a simplified short-term coculture system with autologous cumulus cells may help rescue moderate quality embryos to cleave regularly.

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